Fig. 4.

Cross-neutralisation of RPV and PPRV. Sera from animals infected with either RPV (blue circles) or PPRV (yellow squares) were screened for neutralising activity against VSV pseudotypes bearing RPV (Kabete O) or PPRV (Nigeria/75/1) glycoproteins. Serial dilutions of each serum sample were prepared in triplicate and screened for neutralising activity. Antibody titres were calculated based on a 90% reduction of infectivity relative to the no serum control. Neutralising antibody titres were highest against the homologous virus. (For interpretation of the references to color in this figure legend, the reader is referred to the web version of this article.)